Flux-gate magnetic field sensor based on yttrium iron garnet films for magnetocardiography investigations
- 91 Downloads
A new type of f lux-gate vector magnetometer based on epitaxial yttrium iron garnet films has been developed and constructed for magnetocardiography (MCG) investigations. The magnetic field sensor can operate at room temperature and measure MCG signals at a distance of about 1 mm from the thoracic cage. The high sensitivity of the sensor, better than 100 fT/Hz1/2, is demonstrated by the results of MCG measurements on rats. The main MCG pattern details and R-peak on a level of 10 pT are observed without temporal averaging, which allows heart rate anomalies to be studied. The proposed magnetic sensors can be effectively used in MCG investigations.
Unable to display preview. Download preview PDF.
- 2.L. I. Titomir, Electric Heart Generator (Nauka, Moscow, 1980) [in Russian].Google Scholar
- 3.V. L. Vvedenskii and V. I. Ozhogin, Supersensitive Magnetometry and Biomagnetism (Nauka, Moscow, 1986) [in Russian].Google Scholar
- 4.I. P. Polyakova, Kreativ. Kardiol., No. 2, 103 (2011).Google Scholar
- 9.Recent Applications in Biometrics, Ed. by Jucheng Yang and Norman Poh (INTECH Open Access Publisher, 2011), pp. 215–238Google Scholar
- 16.A. Van der Ziel, Noise (Prentice-Hall, Englewood Cliffs, 1954).Google Scholar
- 17.D. Brisinda, M. E. Caristo, and R. Fenici, Am. J. Physiol.: Heart Circ. Physiol. 291 (1), H368 (2006).Google Scholar
- 18.Cardiograms: Theory and Applications, Ed. by D. N. Christa (S. Karger AG, Basel, 1979), pp. 1–67.Google Scholar
- 22.A. K. Zvezdin and V. A. Kotov, Magneto-Optics of Thin Films (Nauka, Moscow, 1988) [in Russian].Google Scholar